Such as; Type of property (SFR, 2-Plex, 4-Plex, Condo, etc), age of property, Current rent, vacancy, and utility info (if known). 

What problems should I look for, given it's age?

That includes an hoa, property management, everything.The cost of your repairs really depends a lot more on who your tenant is than the age of the property.  

So far: quarterly % change in Real GDP, YOY % Change in Monthly home prices, job growth, interest rates, population shifts, rising wages, area revitalization, relocation, marriage, family growth, divorce, death, debt, active inventory, sold homes, avg. sold price, average days on market, Concentrations of jobs by occupational category, average level of education, school rankings, crime, appreciation, property tax rate, state tax rate, positive/negative RE legislation, monthly rental income, average age, inflation, popular property types and configurations, vacancy rates, volume of rental units added to market, time to rent, months of supply, volume of new home construction. 

I can tell you from personal experience, college age renters have very low expectations, and will likely damage anything you finish the units with.  

., former employer 401k) to a solo 401k are not reported on Form 5498, but rather on Form 5500-EZ, but only if the air market value of the solo 401k exceeds $250K as of the end of the plan year (generally 12/31);When funds are rolled over or transferred from an IRA or 401k to a self-directed IRA, the amount deposited into the self-directed IRA is reported on Form 5498 by the receiving self-directed IRA custodian by May of the year following the rollover/transfer.Rollovers (provided the 60 day rollover window is satisfied) from an IRA to a Solo 401k or self-directed IRA are reported on lines 15a and 15b of Form 1040;Pre-tax IRA contributions on reported on line 32 of Form 1040;Pre-tax solo 401k contributions are reported on line 28 of Form 1040;Roth solo 401k funds are subject to RMDs;A Roth 401k may be transferred to a Roth IRA (Note that from a planning perspective, it may be advantageous to transfer Roth Solo 401k funds to a Roth IRA before turning age 70 ½ in order to escape the Roth RMD requirement applicable to Roth 401k contributions including Roth Solo 401k contributions and earnings.)

I'm new to Bigger Pockets and joined because I am approaching the age where I can gain access to my 401 k savings without paying the 10 % penalty.  

We were impressed by this because we have renters twice their age that are good people but not as put together as these younger people were.

Although, I only foresee, demand going up as many 'Baby Boomers' are coming of age and moving into Senior-Assisted Living.My number one goal for the investment is to learn how to be a investor myself and number two is of course is to make a solid investment.

Loss of granules is a sign of roof aging.